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1 #pragma once
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2 #include <vector>
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3 #include <algorithm>
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4 #include <SDK/callback_merit.h>
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5
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6 namespace fb2k {
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7 // Call global callbacks in correct order
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8 // INTENDED FOR CORE USE ONLY
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9 // Not aware of dynamically registered callbacks, if there are such for the same event type
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10 // Usage: for_each_callback_by_merit< metadb_io_edit_callback > ( [] ( metadb_io_edit_callback::ptr ) { ...} );
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11 template<typename class_t>
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12 void for_each_callback_by_merit(std::function<void(service_ptr_t<class_t>)> f) {
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13 struct rec_t {
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14 class_t* obj; // non-autoptr INTENDED, avoid destruction order bugs on shutdown
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15 fb2k::callback_merit_t merit;
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16 };
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17 auto generator = [] {
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18 std::vector<rec_t> ret; ret.reserve(64);
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19 for (auto ptr : class_t::enumerate()) {
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20 rec_t r;
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21 r.merit = fb2k::callback_merit_of(ptr);
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22 r.obj = ptr.detach();
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23 ret.push_back( std::move(r) );
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24 }
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25 std::sort(ret.begin(), ret.end(), [](rec_t const& e1, rec_t const& e2) { return e1.merit > e2.merit; });
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26 return ret;
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27 };
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28 static std::vector<rec_t> cache = generator();
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29 for (auto& walk : cache) f(walk.obj);
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30 }
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31 }
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